An infinite nonconducting sheet has a surface charge density s = 2.80 pC/m2.
(a) How much work is done by the electric field due to the sheet if a particle of charge q = +1.60 × 10-19 C is moved from the sheet to a point P at distance d = 3.38 cm from the sheet?
b) If the electric potential V is defined to be zero on the sheet, what is V at P?